How are related addresses added when records are merged?

We have Related Address fields on our contact pages. We're wondering why merges can potentially result in duplicate addresses even though we have the setting selected to "Store only most recent historical address will store the address in the Other Address field."

Article
Number:112929

Products:

Luminate_CRM

Historical Address Management only works for those addresses that are added to the contact through a direct interaction, such as an admin updating the address, or the constituent updated their address in Luminate. When you merge two records that have different addresses, the merge logic doesn't look at what is in the related list object and will allow duplicates in the related list after merging.